Hollow roll



Patented Dec. 17, 1929 mire-Nr orsi-e121 GEORGE'. Barnim.` oFllvrcirrmsroam en''maestriwafivairL HOLLOW ROLL Appiiation.filea'ncember 14, 1926; semi No. 154,799;A

This invention relates to rolls. v I K More particularly it relatestocomposite rolls', in' which aiormingi or face pjo'rtioiris separablefrom' the driving or' spindle portion;

' Amongthe'objects of the invention arel to providea roll' having' aseparable hollow Wearing face or shell that' may be heated or coole-d bycirculating fluid therein, together with means for accuratelypositioning the shell portion of the roll uponvt'he spindle portion,andbf'retaining itin fixed position thereon'by means permitting itsready detachment. v Referringto the' drawings, Fig. 1 shows anaxial-partial section through the roll'vvith all of the parts inassembled position; Fig. Q'

is an endvieiv on the line IIe-II o'Fig. 1; Fig. 3 is a partial sectionon the' lines Hl-Hloi'tFig; 1.

As well known in the art, rolls usedl for forming and finishing hotmetal bars are subject to a considerable Yamount or Wear. After thevsurfaces of theroll have become Worn it is necessary to dismount them,resur- 'ace the-Worn' face portion by machining, or other means.Aiterthis'has been done a certain number of times, the roll is no longerusey ful and must be scrapped. Furthermore, the 3o'necksofthe'rolls'sometimes break, and under present'conditions thatmeans that the entire roll" is a Atotal loss except for scrapV uses ofthemetal as'such. Also the physical charac- 3'5* su'cli'rolls are'notthose'most suitable for the necks thereof; 1

To meet=these'conditions, and to provide an improved form of roll inWhich the Wearing 4U, surface' portion may be detachable from the asthat illustrated in the drawings has been designed; y Y

This comprises an' aXialzs'pindle member forging, havingl its' endformed intoy Wobblersl, vvitli'a'djaoent necks?, andivvith anintermediate" body portion' 3, Which may be i in thel original forgedform, Without any mashining; Betweenth'emiddle body portion 3f andIthene'cks' 2, the body member is mate'ristics suitable' forv the'forming surface of spindle or carrying.' portion, a` structure suchehined tof formathreaded'; portion 4 and a smooth'cylindrical portion5", respectively, as indicatedon'thedrawing. Y Y

' The threaded Aportion lfis adapted to receive an internally threaded`We'dg'e seat-ingior sup-- port memberA 6';v and! the smooth portion 'isadapt'edlto receive a similar Wedge member?, which however is notthreaded but merely slides thereon These supporting Wedge members 7 and6"are preferably -ii-rus-v tro-'conicalinexterior shape, withlongitudinal'seating ri'bsll and. 14a thereon respectively. The ribs arepreferably three in n-umber'oneachioi members 6 and 7, giving stablesupport as will beobvious. f

keyivay 8 is provided in the' neck 2 and'` threaded" portion Ll, With a'corresponding. keyivay' in theWed'gej member' 6, so that` thelatter'may'be held against rotation on theY spindle-memberjbyinsertionof a key 9, as sliovsfnattlie'leftofFig'; 1.`

` A j am nut 1f()y isfadapted'to.cooperate.with thread-son portion 5,and'isa'follovver for the lWedgel member 7, for the purpose of drivingandlockingit ii'r'proper Aoperative posi.- tionup'on the spindle'.`

The Wearing iaceor the rolll is formed by a hollow shell which' may bemade by casting, or forged, havingjend portionsll'and 12 with aconnecting intermediate cylind'ri- 80 calr portionl. 'The ends 11 and'12have aligned inwardly convergine tapered: openings adapted to seatonVribs 111 andllla on the. outer surfaces oi' the Wedge. members 7 and 6,respectively: y f

The opening in the' end 12 of the -shellhas keyvvays 15" adapted toreceive the ribs 14, so that there can be -no relative rotation betweenthe' shell andbase 7. That base itselfis pref# erably held innon-rotatable relation to the spindle by'a keyfQ.

'llliezonter' face'13` of the shell member may have grooves of* anydesired contour maa chinedj therein: for the'purposes of for-mingbarsthat. are tovbei-rolledfbetween this roll and a cooperating one ofisimilar exterior sur-face, asWll-.be'understood by'those `familiar-,Withtherart'. This .member mayf'befmade of; a. special' alloy suchV asadamite, or chilled:- iron, to give increased Wearing qualities, 100

Cil

while the spindle may be of soft low-carbon steel for toughness andresistance to breaking strains.

Hardened washers may be used where necessary at the ends of the shellmember, for the purpose of furnishing the contact with the housing orjournal members. These will be of suitable number and thickness, and arenot illustrated or claimed.

In making up a rOll embodying this invention, the spindle member isforged in one operation. The necks and wabblers are then machined somuch as is necessary, as are also the keyways, and the threaded portions4 and 5. Holes are drilled in the outer ends of the support member 6 andin the outer face of the jam nut 10 so t-hat they may be turned downwith a spanner Wrench.

The wedge member 6 is first turned to its proper position upon thethreaded portion 4 of the roll, and the key 9 is inserted, thus lockingit in position. The shell is then moved over the spindle from theopposite end of the roll, the opening in the end 11 thereof seating uponthe three ribs 14a of the support ymember 6. This three-point supportarrangement insures that the roll will be accurately seated upon thebase or Wedge 6.

The frustro-conical wedge member 7 is then slipped on the portion 5until the three ribs 14 upon its outer face seat in the keyways 15 ofthe opening in the end 12 of the hollow body member. The key 9a is theninserted and the jam nut 10 is turned up to lock the supporting member 7in position. The cylindrical surface 13 of the roll is then machined totrue it, or to form grooves therein, and the roll is ready forattachment to the usual driving mechanism. When the member 13 becomesheated in use it will expand and elongate. The resulting increase oflength will thrust the ends 11 and 12 against the inclined members 6 and7 This will result automatically in a tightening of the asf sembly inuse, rather than a loosening as would result if the supports 6 and 7were not so tapered.

It will be obvious that hot steam may be readily introduced through thespace between the outer faces of the members 6 and 47, and the edges ofthe openings in the ends at the ends, thus giving additional strength.

The interior of the shell member may be left as a rough casting.

By this arrangement a roll made up of seven parts is provided, any oneof those parts being replaceable in case it should fail or wear. If thenecks break, the spindle may be replaced, without losing any of thelother parts; if the forming or face member breaks or wears out it maybe'replaced without loss of other parts; if it wears or deteriorates inuse it may be dressed down, While the remainder of the roll is inservice with a different forming member tted thereon. Shells ofdifferent sizes, or with grooves of different contour, etc., may be usedwith a single spindle.

I claim:

1. A composite roll comprising an axial spindle member threaded atk oneend, an internally-threaded wedge member adapted to engage the threadson the axial member, a slidable wedge member seated on the other end ofthe spindle, means to lock the slidable wedge member in position, and ashell member adapted to seat at each end upon Vthe wedge members.

2. A composite roll comprising an axial spindle member, frusto-conicalwedge members movably mounted on the axial member, a hollow shell memberadapted to seat at each end upon the wedge members, andreadily-releasable means to lock the wedge members in adjusted positionto support the shell member. v

3. A composite roll comprising an axial spindle member threaded at eachend, frustroconical wedge members adapted to move on the axial member, aplurality of seating ribs upon the outer surface of each frusto-conicalwedge member, a shell member adapted to seat at each end upon the ribsof the wedge members, and means to move the wedge members and to lockthem on the spindle.

4. A composite roll comprising an axial spindle member having necks andwobblers at each end, wedge members adapted to move respectively fromeach end toward the middle portion of the spindle member, adjustablelocking means for said Wedge members, and a hollow roll body memberadapted to seat at each end upon and to be retained in position by the`said wedge members.

5. A composite roll comprising an axial spindle member having the usualnecks and wobblers and an intermediate body portion, the ends of theintermediate body portion being threaded, a wedge member adapted toengage one of said threaded portions of the body and to move toward themiddle portion thereof upon the threaded portion, a second wedge memberadapted to slide on the other end of the spindle, a threaded memberadapted to drive the second wedge member inward on the spindle, and ashell member adapted to engage the said Wedge members, said shell membercomprising a cylindrical portion having anged nturned portions at theend thereof With tapered openings through the said flanged ends adaptedto engage and seat upon the said Wedge members.

In testimony whereof, I sign my name.

GEORGE BAEHR.

